TABLE OF CONTENTS
CALIBRATION PROCEDURE
ENGINEERING DRAWINGS
PURPOSE
This device is designed as a precision hi/lo
temperature limit switch for environmental and reliability
test chambers. Whenever the measured temperature strays above
or below a preset "normal" range, an output switches
to the "off" state to disable either the heating
system or the cooling system. A third "auxiliary"
output may be used either to operate remote alarm devices, or
to remove power from equipment under test within the chamber.
Visual LIMIT indications and an audible warning signal are
provided, and the output is held off until manually reset by
the user (automatic reset is a user-selected option).
DESCRIPTION
This device is packaged as a single, panel-mounted
component, consisting of printed circuit assemblies housed in a
painted and anodized aluminum case. Front panel controls and
indicators include:
The controller is designed for use with ISA type
T (copper vs constantan) thermocouples, with a measuring range of
-125°F to +375°F. Electronic cold junction compensation
is provided, and the input is unaffected by sensor leadwire resistance.
In the event of an open sensor circuit, the controller will produce
a flashing "0" temperature indication, and a flashing SENSOR
warning. A special fail-safe circuit also disables both the heating
and cooling outputs, assuring that both systems will remain inoperative
until protection is restored. The indicating accuracy of the controller
is +/-.25%. The switching accuracy is mainly a function of its setability;
about +/-1%.
The outputs of the controller consist of three mechanical
1P2T relay contacts, rated 10-amps at 250vac maximum. These relays are
energized during all periods of normal operation, and drop out whenever
a limit is exceeded, or when power is removed from the equipment.
Input power requirements are 3.5VA max at 110/120vac
or 208/240vac, 50/60 Hz. All connections are made at terminal blocks on
the back of the unit.
INSTALLATION & WIRING
Install the controller at a location which is convenient
to system wiring, reasonably free of vibration and temperature extremes,
and accessible to equipment operators. The controller is normally
panel-mounted in a 3-11/16" x 8-3/16" cutout, using special
mounting clamps (p/n 352052). As shown on Drawing No. 470606,
the controller normally protrudes 6-1/4" behind the face of the
mounting panel; an additional 1-1/2" clearance behind the unit
will be required for the relay output board and its associated wiring.
Connect an ISA type T thermocouple to the SENSOR
terminal block in the upper left-hand corner of the controller.
Use only type "XT" (copper vs constantan) thermocouple
extension wire between the sensor and this terminal block, and
observe the color code indicated below each terminal. The controller
is not affected by leadwire resistances less than 1000-ohms.
Connect the input power to the terminal block in the
lower left-hand corner of the controller, as follows:
Jumpers on the relay output board permit user-selection
certain operating characteristics. The AUX relay may be used to control
power to test specimens, or to operate remote alarms. To pulse
a remote alarm device, move the AUX jumper to the "Alarm"
position. If the controller is used in the manually reset mode,
it will normally start-up in the "tripped" condition.
If the equipment can be permitted to restart itself when power
is restored, move the POWER-UP jumper to the "Automatic"
position. But if the alarms should trip on power failures, but
not in connection with routine on-off switching, connect the instrument
to the main power buss, just ahead to the equipment's on/off switch,
and set this jumper at the "Manual" position. The HIGH
and LOW alarm channels may be independently set for either "Automatic"
or "Manual" reset (selecting automatic reset also necessarily
provides for automatic reset at power-up).
The controller's relay outputs are plainly marked ...
These SPDT contacts will handle up to 10-amps at
250vac. During periods of normal operation, these contacts will be
closed (COM to NORM). When out-of-limits conditions
occur, the appropriate contacts will switch to the opposite state
(COM to ALARM), (COM to LOW), or
(COM to HIGH). Use these contacts to signal remote
alarm devices, to disable cooling and heating systems, to shut-off
power to "live loads", etc.
OPERATION
The limit temperatures can be set by depressing
either the HIGH LIMIT or LOW LIMIT display select button, then
turning the respective set point adjustment as necessary to provide
the desired indication. When either limit display button is
pressed, the selected parameter will be held for approximately
30-seconds, then the display will automatically return to the
temperature-indicating mode. The indicator can be manually returned
to the measured temperature by pressing the TEMP button.
When power is first applied, the controller will
start-up in the "LIMIT" mode. Its red HIGH LIMIT and green
LOW LIMIT indicators will flash on and off, and the audible alarm
will sound. To start the equipment, press both RESET buttons. If
the measured temperature is within the set limits, the indicators
and audible alarm will be switched off, and the outputs will be
enabled (units set for automatic reset will start up automatically).
If desired, automatic power-up reset operation may be
selected via a jumper on the output board. When the feature is used,
the limit indicators will flash on momentarily when power is first
applied, and will then automatically assume the normal reset condition.
During all periods of normal operation, the alarm
indicators and the audible warning device will remain off, and the
system will be enabled by the controller's outputs. If the measured
temperature ever exceeds a limit setting, the controller will
immediately switch to the LIMIT mode. The flashing red or green
indicator will then be enabled, the audible warning will sound,
and the associated output will be disabled. When the temperature
has returned to an acceptable level, press the lighted reset button
to return to normal operation. In the meantime, the audible warning
signal can be turned off by depressing the SILENCE button.
Independent automatic reset operation is available
for both the HIGH and LOW channels, via jumpers on the output board.
When used, the alarms will return to the normal status as soon as the
measured temperature returns to within limits. Note that the selection
of automatic reset inherently provides power-up reset for that channel.
It is not possible to set the jumpers to provide automatic reset on both
limit channels, with manual reset on power-up.
CIRCUIT ANALYSIS
The schematic diagrams Dwg Nos.
470580 and 470581 are available for download as a single self-extracting archive
(733KB) containing two overlapping diagrams. These may be printed on 8.5" x 11"
paper using ordinary printers and commonly available graphics shareware such as
LViewPro or Graphics Workshop.
You may also view these schematic diagrams immediately by
opening them in your browser's window ...
Most browsers will add these files to their cache, and you should
then be able to retrieve them from that folder and save them for future reference,
if desired. Layout diagrams for each printed circuit board are provided in the
Parts List section, which appears below.
Measuring Circuit
The controller's temperature measuring circuit,
U3a and its associated circuitry, converts the low level thermocouple
input to a scaled and compensated high level analog voltage.
The sensor, "mj" (measuring junction) is connected to
U3-11, the input of this amplifier. C1 provides low pass filtering
for this input. The controller is designed to measure temperatures
over the range of -125°F to +375°F, using a type T (copper
vs constantan) thermocouple. Over this temperature range the
sensor produces emf's ranging from -3.006mV to +8.787mV. This
input is amplified and scaled to provide a 0v to +5.0v analog
output at U3-6. To achieve this, the gain of the amplifier is
set by R6, R8 and R9 at 424.
This non-inverting amplifier will always settle
at the point where the potential at its inverting input, U3-10,
is exactly equal to its input, U3-11. This condition is established
by a feedback current, passed from the output, U3-6, through R8
and R9 to the amplifier's inverting input. For a given input,
the magnitude of the feedback current required to establish this
balance is a function of R6. Having established that, the magnitude
of the amplifier's output voltage then becomes a function of the
feedback resistors, R8 and R9. The resistor values used permit
the gain to be set exactly at 423.98, with a calibration range
of about +/-2% to accommodate all tolerances.
Thermocouple circuits necessarily involve a second
junction, sometimes called the "reference junction".
This junction, shown as "rj" on the schematic, has
the same "emf vs temperature" characteristic as the
sensor. It occurs in series with the sensor's emf, with the opposite
polarity. The emf produced by the "rj" junction is
algebraically summed with the sensor emf, so any variation of
the ambient temperature directly affects the measurement.
U1, R1 and R2 provide reference junction compensation,
which minimizes errors due to variations in ambient temperature.
U1 is an integrated circuit temperature sensor, which produces
an output proportional to its absolute temperature. This output
varies 10mV/°C, and is scaled by R2 to produce a feedback
current through R8 and R9 which will be approximately equal and
opposite to that being caused by the influence of the reference
junction. At room temperature, the emf produced at rj varies
about 40.7uV/°C which, in turn, produces a feedback current
of about 40.7nA through R2. A 1°C ambient temperature change
will also result in a 10mV variation at U1. This will produce
a -41nA change in the total feedback current, which approximately
cancels out the shift produced by rj.
U2, R3, R4 and R5 provide a means of shifting
the amplifier's output to zero with a -125°F input at
"mj". U2 is a precision voltage reference
integrated circuit, which provides a stable +6.9v at its junction
with R3 and R4. At -125°F, the mj input will be -3.006mV.
Assuming a 25°C ambient temperature, the emf produced by rj
will be about +0.992mV, so the net input will be about +3.998mV,
producing an offset of about +1.7 volts at U3-6.
Meanwhile, the voltage at the U1, R1 node varies
with absolute temperature by 10mV/°K, and will therefore
be about +2.98v (0C = 273°K). This produces a compensator-related
offset at U3-6 of about -5.2 volts.
U3 is a precision op amp, with negligible offsets,
so the total value of the offsets is therefore about -3.5 volts.
To shift the output level back to zero, R5 is adjusted so that the
zero network injects a current into the feedback node which is about
equal and opposite to that caused by the total offsets; about
-3.5v/422.98°K = -8.3uA.
Linearizer Circuit
The "emf vs temperature" response of the
thermocouple temperature sensor is highly nonlinear, varying from
16.6uV/°F at -125°F to 29.2uV/°F at +375°F.
To provide a highly accurate digital temperature read-out, U3b
and U6 converts the nonlinear 0/-5.00v measuring circuit output
(U3-6) to a linear analog at U3-13. The linear analog has a range
of 0/+5.00v (slope = 10mV/°F).
A "piecewise" linearizing strategy is used,
which breaks down the output at U3-6 into five segments. The apparent
gain of the inverting buffer, U3b, is readjusted as necessary
to produce a linear 10mV/°F slope within each segment. For
example, the non-inverting input, U6-5, is held at +3.752 volts
by the voltage divider R14 - R18. With the R11/R12 node at any
higher level, U6-7, and all the other outputs of U6, will be at
the negative saturation limit. Because of the diodes CR1 through
CR4, U6 makes no contribution to the output under these circumstances.
As the temperature decreases, the R11/R12 node drops
below the +3.752 volt threshold (U3-13 = +3.843v), U6-7 swings
to +3.752 volts plus the diode drop, acting like a dc buffer which
sets U6-6 at +3.752 volts. This produces a small current in R19.
Since the other three linearizer stages are still off, this current
is provided from the output U3-13, through R12. In order to provide
this additional current, U3-13 drops to a slightly less positive
level than would otherwise be required to satisfy the normal R10
feedback requirement.
As the temperature continues to fall, the voltage
at the R11/R12 node decreases. This increases the linearizer current,
which increases the resulting offset factor in the U3-13 output.
When the R11/R12 node falls to +2.757 volts, the next linearizer
stage is enabled, increasing the rate of curve correction. By
increasing the slope-compensating action as the measured temperature
decreases, the linearizer converts the sensor's "curve"
to a constant 10mV/°F slope.
Without linearization, measuring errors as large
as 33.3°F could result. The theoretical maximum error of
this linearization scheme is -1.7°F occurring at -76°F.
Scaling Circuit
The indicator A/D converter is basically a digital
millivolt meter. The 0/+5.00v output provided at U3-13, and the
limit set point analog voltages from R70 and R71, must therefore
be converted to -125mV/+375mV to provide a "-125°F"
to "+375°F" display. The scaling circuit also converts
these analog voltages to equivalent Celsius (°C) values.
Analog switch U7 multiplexes the analogs into buffer
input U8-3. The output of this buffer is connected to two voltage
dividers. The R23 - R25 divider converts the 5-volt analog to
a 0/500mV analog, representing the 500°F span. The R26 -
R29 divider converts the 5-volt analog to a 0/278mV analog, representing
the equivalent 278°C span. Either the "°F"
or the "°C" analog is selected by U9, is buffered,
then applied to R35, an input to an inverting unity gain amplifier.
The inverted output, U8-8, is then applied to R37, the input of
a second inverting buffer.
At this circuit, the analog is summed with an offsetting
voltage selected by two additional sections of U9. In the "°F"
display mode, R31 and R32 injects +12.5uA into the feedback node,
which shifts the output at U8-14 in the negative direction by
exactly 125mV. This provides a "-125" read-out when
the analog is at zero volts. In the "°C" display
mode, an offsetting current of +8.72uA is provided by R33 and
R34, to provide -87.2mV at U8-14 (-125°F = -87.2°C).
The "display blank" input to R28 is taken
from the CR8/CR9 junction at U19, and is normally open since the
diodes are normally reverse biased. Certain sensor faults cause
U19 to forward bias one of these diodes, imposing a -13.3v potential
on R28. This forces U8-14 to at least +2.5v, which activates the
over-range function of the A/D converter, producing a flashing
"0" display.
DVM Circuit
The scaled and level-shifted analog voltage at U8-14
is applied to the input of DVM circuit, U12, through low pass
filter R39 and C16. U12 is a dual-slope 4-1/2 digit A/D converter
which provides a multiplexed BCD output to operate a digital display
system. The least significant digit, D1, is not used in this application.
Peripheral circuitry includes U10, which provides a 100kHz reference
frequency for the converter, U11 which provides a -5v supply for
the DVM chip, and U13, which provides a +1.000v reference voltage.
The BCD, digit and polarity outputs from U12 are
connected to the display circuitry. The BCD inputs to U27, a
BCD/7-segment converter, are set up as required to display the
appropriate number in each digit position, while the display
digits are simultaneously scanned from D4 to D2 (D1 is not used).
U28 through U31 provide a zero-blanking function
for the first two digits, while the LSD is driven directly with
no blanking provisions. One degree is therefore displayed as "1",
rather than "001". When all the BCD lines are at zero,
U28-1 will be high. U28-13 will therefore be low, preventing the
"D4" pulse from being gated through U29-3. If any BCD
line is high, these logic levels will be reversed. When D4 goes
high, U29-11 goes high, which enables digit driver transistor,
Q16. D4 is also gated into U30-3, clocking this D-type flip-flop
circuit. If the BCD lines are all zero for D4, a high logic level
is clocked through to the Q output, U30-1. Then, if the lines
are also all zero for D3, U31-3 will be low, preventing the D3
pulse from being gated through to the digit driver transistor,
Q17. Again, if any one of the BCD lines is high during the D3
time, the second digit will be enabled.
Display Mode Selector Circuitry
The digital display system is used to read-out the
high and low limit set points as well as the measured temperature
value, and can display all values in either °F or °C.
The display mode is selected by the circuitry composed of U14
through U17.
U14 is a dual timer. When the high limit display
button is pressed, its timer is triggered and provides a high
output (H) at U14-6. This enables the "High Limit" indicator,
DS1, and analog gate U7-3. If the low limit timer was active when
the high limit button was pressed, it will be reset by U15-9.
A high output from either timer disables the temperature display
line (T) by forcing U16-9 to go low. The timers will hold the
display for 30-seconds, after which the display automatically
returns to the measured temperature.
U17 is a simple manual set-reset flip-flop, which
selects either the °F or °C range, operating the analog
gates of U9 in the scaling circuit accordingly.
Alarm Circuitry
U19 provides a system of comparators which monitors
the measured temperature with respect to high and low limit settings,
and for "reasonableness". U18 provides a precision +6.9v
reference for the limit set points, R70 and R71. These set point
outputs provide one input to their respective comparator circuits,
while the 0/+5.00v temperature analog voltage is connected to
the other inputs. When the analog voltage is less than the high
limit set point, and greater than the low limit set point, both
U19-14 and U19-8 will be low. U20-11 and U20-10 will therefore
be high.
Furthermore, when the analog voltage is greater than
-0.06v, but less than +5.06v (i.e., temperature within the range
of -131F to 381F), U19-1 and U19-7 will both be high, and U23-4
will therefore also be high.
Pressing both reset buttons, S6 and S7, forces U20-4
and U20-3 high. With all three inputs high, U21-6 and U21-9 go
low. This disables both the high limit and low limit indicators,
and latches U20-4 and U20-3 at the high level, enabling the output
transistors, Q7 and Q10. This is the normal operating status.
In the event that the temperature strays outside
of the set range, either the high limit or low limit will be tripped,
and the above status for that limit will be reversed; the indicator
will be on and output transistor off. The indicators are gated
by a flasher signal provided from U24-11.
When neither limit is tripped, U24-3 will be low.
U26-10 and U25-11 will therefore both be low, holding both the
audible warning device (beeper) and the SILENCED indicator off.
When either on (or both) of the limits are tripped, U24-3 goes
high. This enables the audible warning device, but not the SILENCED
indicator. Pressing S8 forces U25-3 high. U25-10 then goes low,
which latches the beeper off, and the SILENCED indicator on. Both
the beeper and the SILENCED indicator are also modulated by the
flasher signal.
At power on, U23-1 is initial held low as C41 begins
to charge. This trips both limits and toggles the sensor fault
indicator. A momentary loss of power will therefore trip both
limits. An open sensor connection will cause the measuring circuit
to provide abnormal analog voltage levels and toggle either U19-1
or U19-7. A flashing SENSOR warning signal via Q13, and both limits
will also be tripped.
Power Supply Circuits
Power for the controller can be taken from either
110/120vac or 208/240vac, 50/60 Hz lines.
The controller circuit uses +15v, -15v and +5.1v
dc voltages. The +/-15v levels are provided by T1 and its associated
bilateral full-wave rectifier circuit. Regulators U33 and U34
stabilize these supply voltages at the required +15v and -15v
levels. A separate +5.1v supply is provided for the controller's
logic and display circuitry by T2 and regulator U32. All three
of these supplies are adjustable, and are set precisely at the
15v and 5.1v levels.
Output Circuitry
The Q7, Q10 and Q26 open-collector outputs are connected
to operate mechanical relays K1, K2 and K3, and their associated
LED indicators on the relay output board. These relays provide
separate 1P2T contacts capable of switching 10-amps at 250vac.
The relays are de-energized by abnormal operating conditions (AUX
<- COM), (LOW <- COM) and (HIGH <- COM).
Handling Electrical Interference
When used in the manually reset mode, this device
becomes a latching mechanism. Momentary bursts of stray electrical
energy, which would normally constitute nothing more than a transient
disturbance for other non-latching electronic instruments, may
cause this device to latch its load circuit off. Electrical interference,
or "noise", is therefore a matter for special attention
in the application of latching electronic limit controllers.
Although this control has been designed to provide
a relatively high level of immunity to stray electrical energy,
it is not possible to provide for 100% rejection of any noise
frequency, waveforms or amplitude. A few application hints are
therefore offered for cases where noise problems occur, or are
anticipated:
Field Calibration Procedure
A ZERO TRIM potentiometer is provided on the back
of the controller to permit easy compensation for minor offsets
due to aging and sensor anomalies. Most calibration problems will
be zero offsets which are correctable here.
The regular ZERO and SPAN are provided on the controller's
top circuit board, and are accessible through ports in the internal
cover plate.
To trim these adjustments …
This procedure normally results in a calibration
accuracy of +/-1% of Span, which will normally be sufficient for
limit switch operation. For closer calibration, refer to the more
detailed bench procedure, which follows.
Test Bench Calibration Procedure
Remove the internal cover panel to gain access to
the various trimmers referred to below, then refer to circuit board
layout Drawing No. 470582 and perform the following adjustments.
PARTS LIST
This section of the handbook includes parts lists
for each major assembly and repairable subassembly. This lists
are arranged by part number, as indicated in the table of contents.
Each list includes a component layout drawing, which physically
located most items.
Every item used in an assembly is identified in its
parts list. The various parts are listed by part number. The six-digit
part numbering system has a logical order, which is summarized
as follows:
Since the manufacturer's name and part number are often printed
on purchased parts, this information is included in the parts
lists to help you properly identify the item in question. Purchased
parts are often provided by alternate sources however, so this
information should be taken as representative, rather than absolute.
Part Number: 012011
"TempSentry"
BI-DIRECTIONAL TEMPERATURE LIMIT CONTROLLER
Part Number: 048048
"TempSentry"
ANALOG PCB ASSY
Part Number: 048049
"TempSentry"
DIGITAL PCB ASSY
Part Number: 048050
"TempSentry"
DVM PCB ASSY
Part Number: 048051
"TempSentry"
CONTROL PCB ASSY
Part Number: 048053
"TempSentry"
RELAY OUTPUT PCB ASSY
DESCRIPTION
INSTALLATION & WIRING
OPERATION
Linearizer Circuit
Scaling Circuit
DVM Circuit
Display Mode Selector Circuitry
Alarm Circuitry
Power Supply Circuits
Output Circuits
Test Bench Calibration Method
Analog PCB Assy
Digital PCB Assy
DVM PCB Assy
Control PCB Assy
Relay Output PCB Assy
Schematic Diagrams
PCB Component Layout Diagrams See Parts List
AUX:
ALARM/COM/NORM LOW LIMIT:
LOW/COM/NORM HIGH LIMIT:
HIGH/COM/NORM.
circuit temperatures to stabilize prior to final calibration.
Also please note that unrestricted air flow through and around
the unit may produce abnormal temperature gradients in the
measuring circuitry, which can degrade the accuracy of the
calibration effort (vis., avoid drafts).
Major Assemblies & Subassemblies Electronic Component Parts Electromechanical Parts Optical Parts, Sensors Wiring & Wiring Hardware Printed Circuit Boards Electrical Parts & Hardware Mechanical Hardware Fluidic (Pneumatic) Parts & Hardware Mechanical & Structural Parts Drawings, Publications & Literature
Drawing Number: 470606
048048
ANALOG PCB ASSY, FRT
WRNR
048048/470582
048049
DIGITAL PCB ASSY, FRT
WRNR
048049/470583
048050
DVM PCB ASSY, FRT
WRNR
048050/470584
048051
CONTROL PANEL PCB ASSY, FRT
WRNR
048051/470585
048070
RELAY OUTPUT PCB ASSY
WRNR
048070/470734
142001
FILTER, RED DISPLAY
WRNR
470509
251018
INSULATOR, FRT
WRNR
251018/470683
266002
STICK MOUNT, GRN
MEIJ
271026
SCREW, BDR HD 6-32x.250
SSUP
271028
SCREW, BDR HD 6-32x.500
SSUP
271259
SCREW, TRUS HD 6-32x.250
272041
WASHER, NYLON PLAIN #6 REG
KEYS
3163
279022
SPACER, M-F TYPE 6-32x1.25
KYST
1955
279024
SPACER, M-F TYPE 6-32x.313
SMTH
8249
351030
BEZEL, FRT
WRNR
351030/470590
351048
CHASSIS, FRT
WRNR
351048/470738
352052
MOUNTING CLAMP
WRNR
352052/470602
352056
COVER PLATE, INTERNAL
WRNR
352056/470694
353056
COVER, FRT
WRNR
353026/470694
Drawing Number: 470582
051035
RESISTOR, COMP 1/4W 5%
27 ROHM
RC07GF270J
1 051049
RESISTOR, COMP 1/4W 5%
100 ROHM
RC07GF101J
1 051076
RESISTOR, COMP 1/4W 5%
1.3K ROHM
RC07GF132J
1 051082
RESISTOR, COMP 1/4W 5%
2.4K ROHM
RC07GF242J
1 051083
RESISTOR, COMP 1/4W 5%
2.7K ROHM
RC07GF272J
2 051095
RESISTOR, COMP 1/4W 5%
8.2K ROHM
RC07GF822J
2 051096
RESISTOR, COMP 1/4W 5%
9.1K ROHM
RC07GF912J
1 051099
RESISTOR, COMP 1/4W 5%
12k ROHM
RC07GF123J
1 051106
RESISTOR, COMP 1/4W 5%
24K ROHM
RC07GF243J
3 051107
RESISTOR, COMP 1/4W 5%
27K ROHM
RC07GF273J
1 051113
RESISTOR, COMP 1/4W 5%
47K ROHM
RC07GF473J
2 051121
RESISTOR, COMP 1/4W 5%
100K ROHM
RC07GF104J
5 052209
RESISTOR, FILM 1/8W 1%
121 ROHM
RN55D1210F
1 052237
RESISTOR, FILM 1/8W 1%
237 ROHM
RN55D2370F
1 052238
RESISTOR, FILM 1/8W 1%
243 ROHM
RN55D2430F
1 052271
RESISTOR, FILM 1/8W 1%
536 DIGI
536X
1 052278
RESISTOR, FILM 1/8W 1%
634 ROHM
RN55D6340F
1 052288
RESISTOR, FILM 1/8W 1%
806 ROHM
RN55D8060F
1 052295
RESISTOR, FILM 1/8W 1%
953 ROHM
RN55D9530F
1 052301
RESISTOR, FILM 1/8W 1%
1.00K
DIGI 1.0KX
2 052306
RESISTOR, FILM 1/8W 1%
1.13K
ROHM RN55D1131F
1 052309
RESISTOR, FILM 1/8W 1%
1.21K
ROHM RN55D1211F
1 052313
RESISTOR, FILM 1/8W 1%
1.33K
ROHM RN55D1331F
1 052321
RESISTOR, FILM 1/8W 1%
1.62K
DIGI 1.62KX
1 052327
RESISTOR, FILM 1/8W 1%
1.87K
ROHM RN55D1871F
1 052337
RESISTOR, FILM 1/8W 1%
2.37K
ROHM RN55D2371F
1 052340
RESISTOR, FILM 1/8W 1%
2.55K
ROHM RN55D2551F
1 052369
RESISTOR, FILM 1/8W 1%
5.11K
ROHM RN55D5111F
1 052393
RESISTOR, FILM 1/8W 1%
9.09K
DIGI 9.09KX
1 052395
RESISTOR, FILM 1/8W 1%
9.53K
ROHM RN55D9531F
1 052396
RESISTOR, FILM 1/8W 1%
9.76K
ROHM RN55D9761F
1 052401
RESISTOR, FILM 1/8W 1%
10.0K
ROHM RN55D1002F
6 052406
RESISTOR, FILM 1/8W 1%
11.3K
ROHM RN55D1132F
1 052412
RESISTOR, FILM 1/8W 1%
13.0K
ROHM RN55D1302F
1 052439
RESISTOR, FILM 1/8W 1%
24.9K
ROHM RN55D2492F
1 052528
RESISTOR, FILM 1/8W 1%
191K ROHM
RN55D1913F
1 052538
RESISTOR, FILM 1/8W 1%
243K ROHM
RN55D2433F
1 052543
RESISTOR, FILM 1/8W 1%
274K ROHM
RN55D2743F
1 052552
RESISTOR, FILM 1/8W 1%
340K ROHM
RN55D3403F
1 052554
RESISTOR, FILM 1/8W 1%
357K DIGI
357KX
1 054003
POTENTIOMETER, TRIM 1T-3/8
50 BRNS
3386P-1-500
1 054004
POTENTIOMETER, TRIM 1T-3/8
100 BRNS
3386P-1-101
1 054005
POTENTIOMETER, TRIM 1T-3/8
200 BRNS
3386P-1-201
1 054006
POTENTIOMETER, TRIM 1T-3/8
500 BRNS
3386P-1-501
1 054007
POTENTIOMETER, TRIM 1T-3/8
1K BRNS
3386P-1-102
2 054010
POTENTIOMETER, TRIM 1T-3/8
10K BRNS
3386P-1-103
1 054011
POTENTIOMETER, TRIM 1T-3/8
20K BRNS
3386P-1-203
3 054013
POTENTIOMETER, TRM 1T-3/8
100K BRNS
3386P-1-104
1 062060
CAPACITOR, CRMC 25V
.01uF
MOUS 25FG010
3 062067
CAPACITOR, CRMC 25V
0.1uF
SPRG HY-850
9 063013
CAPACITOR, TANT 35V
1.0uF
MOUS 551-1.0M35
13 063045
CAPACITOR, TANT 25V
10uF
MOUS 551-10M25
6 067054
CAPACITOR, FILM 100V
0.47uF
THOM 581-MC474K1F
1 067058
CAPACITOR, FILM 100V
1.0uF
THOM 581-MC105K1H
2 067069
CAPACITOR, FILM 400V
0.001uF
WEST 160/.001/K/1k/C
1 081001
DIODE, SIG
MOUS
333-1N4148
9 081015
DIODE, SIGNAL LOW iR
SPC
1N457
2 091002
IC, HEX INVERTER
RCA
570-CD4069UBE
1 091013
IC, QUAD BILATERAL SWITCH
RCA
570-CD4066BE
2 093002
IC, QUAD OP AMP
SGS
511-LM324N
2 093010
IC, ADJ POS 1.5A REGULATOR
SGS
511-LM317T
1 093011
IC, +12V 100mA REGULATOR
NEC
551-UPC78L12
1 093012
IC, -12V 100mA REGULATOR
NS
LM79L12ACZ
1 093013
IC, ADJ NEG 1.5A REGULATOR
NS
LM337T
1 093016
IC, PRECISION 6.9V REFERENCE
NS
LM329DZ
1 093017
IC, PRECISION 2.5V REFERENCE
NS
LM336Z-2.5
3 093026
IC, -5V 100mA REGULATOR
NS
LM79L05ACZ
1 093030
IC, DUAL PRECISION OP AMP
LT
OP227GN
1 093032
IC, PRECISION QUAD OP AMP
LT
LT1014DN
1 094001
IC, DISPLAY D/A CONVERTER
ITSL
ICL7135CPI
1 173003
HEADER, RA/SR MALE 36-W
APT
929835-01-36
33 175002
SOCKET, IC, 14 PIN SOLDER TAIL
TIC
8914-01
7 175005
SOCKET, IC 28-PIN SOLDER TAIL
DIGI
C8928
1 271014
SCREW, BDR HD 4-40x.250
SSUP
2
273002
LOCKWASHER, HELIC #4 REG
SSUP
2
274002
NUT, HEX 4-40
SSUP
2
Drawing Number: 470583
051082
RESISTOR, COMP 1/4W 5%
2.4K MOUS
29SJ250-2.4K
3 051089
RESISTOR, COMP 1/4W 5%
4.7K MOUS
29SJ250-4.7K
1 051106
RESISTOR, COMP 1/4W 5%
24K MOUS
29SJ250-24K
2 051129
RESISTOR, COMP 1/4W 5%
220K MOUS
29SJ250-220K
1 051145
RESISTOR, COMP 1/4W 5%
1.0M MOUS
29SJ250-1.0MEG
1 051147
RESISTOR, COMP 1/4W 5%
1.2 M
ROHM RC07GF125J
1 051156
RESISTOR, COMP 1/4W 5%
3.0 M
ROHM RC07GF305J
2 052238
RESISTOR, FILM 1/8W 1%
243 ROHM
RN55D2430F
1 052282
RESISTOR, FILM 1/8W 1%
698 ROHM
RN55D6980F
1 054004
POTENTIOMETER, TRIM 1T
100 BRNS
3386P-1-101
1 054042
POTENTIOMETER, CONT 1T-5/8
5K A-B
73N1N056S502W
2 056001
VARISTOR, 31VDC 180MJ
GE
V39MA2B
4 062060
CAPACITOR, CRMC 25V
.01uF
MOUS 21FG010
10 062067
CAPACITOR, CRMC 25V
0.1uF
MOUS 21FG100
4 063013
CAPACITOR, TANT 35V
1.0uF
MOUS 551-1.0M35
9 063045
CAPACITOR, TANT 25V
10uF MOUS
551-10M25
4 064004
CAPACITOR, ELEC 35V
470uF
PANA P6255
2 064016
CAPACITOR, ELEC 16V
4700uF
PANA P6900
1 062072
CAPACITOR, MONO 100V
.1uF TECA
92R2A104K
1 071005
TRANSFORMER, PWR
34vct/170MA
SGNL LP34-170
1 071006
TRANSFORMER, PWR
16vct/350MA
SGNL LP16-350
1 081002
DIODE, RECT 200V 1A
MOUS
333-1N4002
6 083021
TRANSISTOR, NPN GENL PURPOSE
MOUS
333-KN3904
5 091001
IC, QUAD SCHMIT NAND
RCA
570-CD4093BE
6 091008
IC, QUAD 2-INPUT NAND GATE
RCA
570-CD4011BE
1 091011
IC, TRIPLE 3-INPUT NAND GATE
RCA
570-CD4023BE
1 091012
IC, TRIPLE 3-INPUT NOR GATE
RCA
570-CD4025BE
1 091016
IC, TRIPLE 3-INPUT AND GATE
RCA
570-CD4073BE
1 092005
IC, DUAL MONOSTABLE
RCA
570-CD4538BE
1 093010
IC, ADJ POS 1.5A REGULATOR
SGS
551-LM317T
1 173003
HEADER, RA/SR MALE 36-W
APT
929648-01-36
42 173006
RECEPTACLE, STR/SR 36-W
APT
929850-01-35
16 175002
SOCKET, IC, 14 PIN SOLDER TAIL
TI
C8914
10 175003
SOCKET, IC 16-PIN SOLDER TAIL
TI
C8916-01
1 271015
SCREW, BDR HD 4-40x.375
1
273002
LOCKWASHER, HELIC #4 REG
1
274002
NUT, HEX 4-40
1
Drawing Number: 470584
051053
RESISTOR, COMP 1/4W 5%
150 ROHM
RC07GF151J
8 051087
RESISTOR, COMP 1/4W 5%
3.9K ROHM
RC07GF392J
3 051097
RESISTOR, COMP 1/4W 5%
10K ROHM
RC07GF103J
1 051113
RESISTOR, COMP 1/4W 5%
47K ROHM
RC07GF473J
1 054041
POTENTIOMETER, CONT
10K ALPH
V24PV25SB10K
2 062041
CAPACITOR, DISC 1000V
0.001uF
SPRG 5GA-D10
1 062060
CAPACITOR, CRMC 25V
.01uF
MOUS 21FG010
4 063013
CAPACITOR, TANT 35V
1.0uF
SPRG 199D105X0035AA1
1 083021
TRANSISTOR, NPN
2N3904
NS KN3904
4 091001
IC, QUAD SCHMIT NAND
RCA
570-CD4093BE
1 091008
IC, QUAD 2-INPUT GATE
RCA
570-CD4011BE
1 091009
IC, DUAL 4-INPUT NOR GATE
RCA
570-CD4002BE
1 091010
IC, DUAL D FILP/FLOP
RCA
570-CD4013BE
1 092011
IC, BCD/7-S DECODER/DRIVER
RCA
570-CD4511BE
1 125001
DISPLAY, .43" DIGIT RED (CC)
NS
5082-7653
4 173003
HEADER, RA/SR MALE 36-W
APT
929648-01-36
16 173006
RECEPTACLE, STR/SR 36-W
APT
929850-01-36
30 175002
SOCKET, IC, 14 PIN SOLDER TAI
TI
C8914
4 175003
SOCKET, IC 16-PIN SOLDER TAIL
TI
C8916-01
1 279001
STANDOFF, SWAGE TYPE 6-32x1/4
KYST
1591-2
2
Drawing Number: 470585
051059
RESISTOR, COMP 1/4W 5%
270 MOUS
29SJ250-270
9 051073
RESISTOR, COMP 1/4W 5%
1.0K ROHM
RC07GF102J
1 051082
RESISTOR, COMP 1/4W 5%
2.4K ROHM
RC07GF242J
8 051087
RESISTOR, COMP 1/4W 5%
3.9K MOUS
29SJ250-3.9K
10 083021
TRANSISTOR, NPN
2N3904
MOUS KN3904
10 102010
SWITCH, PB PCB
SHDW
200130
8 109005
KEY CAP, GRY 1-LED
SHDW
71077
8 121003
LED, MIN RED DIFF T1
ROHM
SLH-34-VR3
2 121009
LED, MIN YLW DIFF T1
ROHM
SLH-34-YY3
6 121003
LED, MIN RED DIFF T1
ROHM
SLH-34-MG3
1 124001
SOUND TRANSDUCER
MURA
PKM22EPP-4001
1 173006
RECEPTACLE, STR/SR 36-W
APT
929850-01-36
22
Drawing Number: 470734
051047
RESISTOR, CFLM 1/4W 5%
68 MOUS
29SJ250-68
3 054012
POTENTIOMETER, TRM 1T-3/8
50K BRNS
3386P-1-503
1 081003
DIODE, RECT 400V 1A
SPC
1N4004
3 093029
IC, TEMP SENSOR
NS
LM335Z
1 111004
COVER, MIN PCB RELAY
P&B
35C620
3 111005
RELAY, MIN PCB 24V 1P2T
P&B
T90N5D1224
3 121003
LED, T1 MIN DIFF
RED ROHM
SLR-33 UR3
3 173002
SHUNT, 2-CKT .1 CTRS
APT
929950-00
4 173005
HEADER, STR MALE 3-W
AMP
4-103321-0
4 176006
TERMINAL BLOCK, PCB 3-W
PHNX
1715035
4 176007
TERMINAL BLOCK, PCB 2-W
PHNX
1715022
2
1320 Fulton Street Box 604
Grand Haven, Michigan 49417-0604 USA
Phone: (616) 842-7658
FAX: (616) 842-1471
e-mail: info@fireright.com
Internet: http://www.fireright.com
Page Last Revised on March 29, 1998
©Copyright Warner Instruments 1996 ~ 1998
